Getting rid of photo borders in Bueno

I'm wondering if there is a way to get rid of the green borders that appear around the photos. When I used to use another theme, I could type "border=0" and it would do the trick, but for some reason that doesn't work with Bueno.

Open the post in the post editor. Click on the image to highlight it, click on the image edit icon (mountain) then click on the "advanced tab" and in the "style" field enterborder:none; and update the image and then update the post.